Paul tourasse



(Specimens.)

P. TOURASSE. MAKING 'WIBE FOR PAPER MACHINES.

No. 50Z,O87. I Patented July 25,1893.

UNITED STATES PATENT OEEIcE.

PAUL-TOURASSE, or LA BRIDOIRE, FRANCE.

MAKING WIRE FOR PAPER-MACHINES.

SPECIFIGATION forming part of Letters Patent No. 502,087, dated July 25, 1893.

Application filed April 13,1892. Serial N0.428,969. (Specimena) Patented in France October 19,1889, No. 201,255; in Belgium December 9,1889, No. 88,772; in Germany December 13 1889, No- 54,525; in Switzerland May 19, 1890, No. 2,169, and in England March 25, 1892,11'0. 5,893.

To a ZZ whom, it may concern.-

Be it known that 1, PAUL TOURASSE, a citizen of the Republic of France, residing at La Bridoire, Savoy, France, have invented an Improvement in Making Wires for Paper- Machines, of which the following is a specification.

The said invention has been patented to me in the following countries, namely: France, by patent dated October 19, 1889, No. 201,255; Belgium, by patent dated December 9, 1889, No. 88,772; Germany, by patent dated December 13, 1889, No.54,525; Switzerland, by patent dated May 19, 1890, No. 2,169, and Great Britain, by Patent No. 5,893, dated March 25, 1892.

The endless cloth which forms the subject of the present application is made by threading or intertwining metallic wire helices in the direction of the width of the fabric and flattening them by passing them between roll-' ers after the completion of the fabric. This cloth is intended to take the place, in paper factories, of the ordinary Woven wire cloth on which the paper or cardboard to be made is placed and the water it contains allowed to drip or drain off and which cloth has to be united at its ends byaseam. By passing the.

interlaced helices between pressure rolls the wires are flattened so as to lie practically in one plane, thereby producing a flat fabric having the thickness of one wire, and consequently suitable for use in paper-making machines.

The accompanying drawings show in Figures 1 and 2 in larger scale the construction of the cloth, and Fig. 3 is a perspective view of the apron and rollers.

Metallic wire helices a, 0b, the lengths of which are equal to the width of the fabric, are connected one to another by rotating the one that is being connected, and the desired number of helices are used for the required length of Wire fabric, and the two ends of the cloth thus formed are joined by the last helix threaded simultaneously in both the end helices and I thus obtain an endless cloth without seam. This cloth is passed between two cylinders and flattened, spread and elongated and takes the shape illustrated. in Fig.2.

It is evident that if the cloth is placed on two cylinders Fig. 3 its interlaced wires, of the flattened sections, form hinges for each other and the wires are not at all bent as the fabric passes around the rollers, which is not the case with ordinary cloth in which the longitudinal wires are rapidly worn by the bending action in their repeated passage over the cylinders. Furthermore the old wire cloth belts are joined bya seam which leaves marks on the paper, while the new cloth offers a continuous regular surface.

In my improvement the edges of the endless cloth do not receive or require any finishing because the flattened helices cannot separate and the edges are not any more liable to stretch than the other portions of the cloth; hence the paper is more perfect than that made on the ordinary fabric.

I am aware that wire helices have been interwoven and flattened in forming machine belts and that the edges of such belts have been protected by separate interwoven helices. My improvement relates to an endless cloth for paper machines, all parts of which cloth are uniform so as to be adapted to act equally in receiving the paper pulp.

I claim as my invention As a new article of manufacture an endless wire cloth for paper making machines, composed of metallic wire helices threaded together in the direction of thewidth of the fabric and flattened so that the wire forming a helix lies practically in one plane, the fabric being of a single thickness of wire, substantially as described.

The foregoing specification of my improvement in endless wire-cloth for paper manufacture signed by me this 22d day of March,

PAUL TOURASSE.

Witnesses:

YRIN RABILLOUD, GASTON J EANNIAUX.- 

